2013/10/25 by P. Castorina, Paolo Castorina, H. Satz +1
Physics and Astronomy · #Baryon number #Causality (physics) #Dark Matter and Cosmic Phenomena #Hadron #High energy #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Production (economics) #Quantum field theory #Resonance (particle physics) #Superposition principle #hep-ph #nucl-th
paper · pdf · doi:10.1142/s0218301314500190
16 pages,8 figures
arxiv created 2013/10/25 · openalex publication_date 2014/04/01 · arxiv updated 2015/06/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
For hadron production in high energy collisions, causality requirements lead to the counterpart of the cosmological horizon problem: the production occurs in a number of causally disconnected regions of finite space-time size. As a result, globally conserved quantum numbers (charge, strangeness, baryon number) must be conserved locally in spatially restricted correlation clusters. This provides a theoretical basis for the observed suppression of strangeness production in elementary interactions (pp, e + e - ). In contrast, the space-time superposition of many collisions in heavy ion interactions largely removes these causality constraints, resulting in an ideal hadronic resonance gas in full equilibrium.